Overview
North Loop Substation is an operational electrical substation in Arizona, United States, owned and operated by Unisource Energy. It operates at 138 kV, serving as a key node in the regional transmission grid.
North Loop Substation is an operational electrical substation located in Arizona, United States. Owned and operated by Unisource Energy, the facility is part of the regional high-voltage transmission network, stepping down power for local distribution. The substation's 138 kV voltage level places it in the medium-to-high voltage range, typical for sub-transmission and distribution substations serving urban and industrial areas. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which enforce reliability standards for bulk power systems. As a 138 kV facility, it likely employs modern switchgear and protection systems compliant with IEEE and IEC standards, ensuring grid stability and safety. The facility's location in Arizona, a state with growing energy demand, underscores its role in supporting load growth and renewable integration. North Loop Substation plays a critical role in the local electrical infrastructure, providing reliable power to residential, commercial, and industrial customers in the Tucson metropolitan area. Its operation by Unisource Energy, a major utility in the region, highlights its importance in maintaining grid resilience and supporting economic activity. The substation's strategic position within the transmission network contributes to overall system reliability and energy security.
Environmental context
Located in the Sonoran Desert region of Arizona, the substation operates in a hot, arid climate that poses challenges for equipment cooling and vegetation management. The surrounding area is a mix of urban development and natural desert habitat, requiring careful design to minimize environmental impact. The facility's 138 kV infrastructure is part of a grid that supports both conventional and renewable energy sources, aligning with regional goals for sustainable energy development.
Frequently asked questions
North Loop Substation is located in Arizona, United States, near the Tucson metropolitan area. Its coordinates are approximately 32.4° N, 111.1° W.
North Loop Substation operates at 138 kV, which is a common voltage level for sub-transmission and distribution substations in the United States.
North Loop Substation is owned and operated by Unisource Energy, a major utility company serving the Arizona region.
As part of the US bulk power system, North Loop Substation must comply with NERC reliability standards and FERC regulations, ensuring grid stability and security.
A 138 kV substation typically steps down high-voltage transmission power for local distribution, serving as a critical node for delivering electricity to residential, commercial, and industrial customers.